Display module, display device and vehicle

Abstract

The invention discloses a display module, a display device and a vehicle. The display module comprises a display module body and a cover plate, the cover plate is arranged on one side of the display module body, the cover plate is made of plastic, an optical adhesive layer is arranged between the display module body and the cover plate, and the elastic modulus of the optical adhesive layer is not smaller than 10 kPa and not larger than 280 kPa. The display module provided by the embodiment of the invention can have a better display effect.

Description

Technical Field

[0001] This application belongs to the field of display technology, and particularly relates to a display module, a display device, and a vehicle. Background Art

[0002] With the continuous development of display technology, the application scenarios and fields of display devices are increasing. For example, display devices are often applied to scenarios and fields such as in-vehicle displays, mobile communication devices, home entertainment, and intelligent device control. In related technologies, it is often necessary to adaptively change the materials of some structures in the display device to better apply the display device to the corresponding scenarios and fields.

[0003] However, after changing the materials of some structures in the display device to facilitate its application, the display effect of the display device is easily affected. Summary of the Invention

[0004] Embodiments of this application provide a display module, a display device, and a vehicle, aiming to improve the display effect of the display module.

[0005] On the one hand, embodiments of this application provide a display module, which includes a display module main body and a cover plate. The cover plate is disposed on one side of the display module main body, and the material of the cover plate includes plastic. Among them, an optical adhesive layer is provided between the display module main body and the cover plate, and the elastic modulus of the optical adhesive layer is not less than 10 kPa and not greater than 280 kPa.

[0006] On the other hand, embodiments of this application provide a display device, which includes the display module in the first aspect embodiment described above.

[0007] On the other hand, embodiments of this application provide a vehicle, which includes the display device in the second aspect embodiment described above.

[0008] Embodiments of this application provide a display module, which includes a display module main body and a cover plate. The cover plate is disposed on one side of the display module main body, and the cover plate can be used to provide protection for the display module main body. The material of the cover plate includes plastic, so that the cover plate can have a relatively small elastic modulus, which is convenient for the cover plate to deform and is convenient for the application of the display module. An optical adhesive layer is provided between the display module main body and the cover plate, and the display module main body can be connected to the cover plate through the optical adhesive layer. By setting the elastic modulus of the optical adhesive layer to be not less than 10 kPa and not greater than 280 kPa, the optical adhesive layer can have a relatively small elastic modulus, which is convenient for the optical adhesive layer to deform. When the cover plate deforms, the optical adhesive layer can better absorb the deformation of the cover plate, so that the cover plate is not easily warped, and the display module can have better display uniformity, thereby being able to better improve the display effect of the display module. Description of the Drawings

[0009] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments of the present application. Obviously, the following described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 It is a schematic structural diagram of a display module provided by an embodiment of the present application;

[0011] Figure 2 It is a partial cross-sectional view of a display module provided by an embodiment of the present application;

[0012] Figure 3 It is a partial cross-sectional view of a display module provided by another embodiment of the present application;

[0013] Figure 4 It is a partial cross-sectional view of a display module provided by still another embodiment of the present application;

[0014] Figure 5 It is a partial cross-sectional view of a display module provided by yet another embodiment of the present application;

[0015] Figure 6 It is a partial cross-sectional view of a display module provided by still another embodiment of the present application;

[0016] Figure 7 It is a partial cross-sectional view of a display module provided by still another embodiment of the present application;

[0017] Figure 8 It is a partial cross-sectional view of a display module provided by still another embodiment of the present application;

[0018] Figure 9 It is a partial cross-sectional view of a display module provided by still another embodiment of the present application.

[0019] Explanation of reference numerals:

[0020] 10 - Display module;

[0021] 100 - Display module main body; 110 - Glass substrate; 111 - First glass substrate; 112 - Second glass substrate; 120 - Color resist layer; 130 - Device structure; 131 - Liquid crystal layer; 132 - Electrode; 133 - Driving circuit; 140 - Backlight module; 150 - Polarizer; 151 - First polarizer; 152 - Second polarizer;

[0022] 200 - Optical adhesive layer;

[0023] 300 - Cover plate; 300a - Sub - plate;

[0024] A1 - Central region; A2 - Edge region;

[0025] Z - Thickness direction. Detailed implementation manners

[0026] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application. In the accompanying drawings and the following description, at least some of the well-known structures and technologies are not shown to avoid unnecessarily obscuring the present application; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0027] It should be noted that, in this document, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0028] The orientation terms used in the following description are all the directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0029] With the continuous development of display technology, the application scenarios and fields of display devices are increasing. For example, display devices are often applied to scenarios and fields such as in-vehicle displays, mobile communication devices, home entertainment, and intelligent device control. In related technologies, it is often necessary to adaptively change the materials of some structures in the display device to better apply the display device to the corresponding scenarios and fields. However, after changing the materials of some structures in the display device for the convenience of application, the display effect of the display device is easily affected.

[0030] Exemplarily, in related technologies, when the display device needs to have a relatively complex or three-dimensional appearance and good safety collision performance (for example, in related technologies, when the display device is applied to the in-vehicle display scenario, to meet the cockpit appearance requirements in the vehicle and the safety requirements of the vehicle, the display device often needs to have a relatively complex or three-dimensional appearance to meet the cockpit appearance requirements in the vehicle, and the display device often needs to be able to pass the head impact test of the vehicle well to meet the safety requirements of the vehicle), the material of the cover plate in the display module can be set to plastic to facilitate meeting the appearance requirements and safety collision requirements of the display module.

[0031] However, the cover plate made of plastic has a small elastic modulus, that is, the cover plate made of plastic is prone to deformation. Especially when the environmental temperature changes greatly during the operation of the display module, the cover plate made of plastic is prone to warping deformation with the temperature change (for example, the corners on the periphery of the cover plate made of plastic are prone to warping deformation with the temperature change), resulting in poor display uniformity of the display device and reducing the display effect of the display device.

[0032] To solve the above technical problems, the present application is provided. To better understand the present application, the display module, display device, and vehicle according to the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0033] Figure 1 It is a schematic structural diagram of a display module 10 provided by an embodiment of the present application. Figure 2 It is a partial cross-sectional view of a display module 10 provided by an embodiment of the present application.

[0034] As Figure 1and Figure 2 As shown in Figure 2 , an embodiment of the present application provides a display module 10, which includes a display module main body 100 and a cover plate 300. The cover plate 300 is disposed on one side of the display module main body 100. The material of the cover plate 300 includes plastic. Wherein, an optical adhesive layer 200 is disposed between the display module main body 100 and the cover plate 300, and the elastic modulus of the optical adhesive layer 200 is not less than 10 kPa and not greater than 280 kPa.

[0035] An embodiment of the present application provides a display module 10, which includes a display module main body 100 and a cover plate 300. The cover plate 300 is disposed on one side of the display module main body 100, and the cover plate 300 can be used to provide protection for the display module main body 100. The material of the cover plate 300 includes plastic, so that the cover plate 300 can have a relatively small elastic modulus, which can facilitate the deformation of the cover plate 300 and facilitate the application of the display module 10.

[0036] Exemplarily, the material of the cover plate 300 may include at least one of polycarbonate (PC) and poly(methyl methacrylate) (PMMA).

[0037] Optionally, the cover plate 300 can be prepared by an in-mold labeling process (IML), an in-mold filming process (IMF), an insert molding process (INS), or an in-mold transfer process (IMT; IMR).

[0038] An optical adhesive layer 200 is disposed between the display module main body 100 and the cover plate 300, and the display module main body 100 can be connected to the cover plate 300 through the optical adhesive layer 200. By setting the elastic modulus of the optical adhesive layer 200 to be not less than 10 kPa and not greater than 280 kPa, the optical adhesive layer 200 can have a relatively small elastic modulus, which can facilitate the deformation of the optical adhesive layer 200. When the cover plate 300 deforms, for example, when the cover plate 300 deforms due to heat or is affected by external forces, the optical adhesive layer 200 can preferably absorb the deformation of the cover plate 300, so that the cover plate 300 is not easily warped, and the display module 10 can have better display uniformity, thereby being able to better improve the display effect of the display module 10.

[0039] Exemplarily, by setting the elastic modulus of the optical adhesive layer 200 to be not less than 10 kPa and not greater than 280 kPa, when the cover plate 300 deforms, the optical adhesive layer 200 with a lower elastic modulus can deform well together with the cover plate 300, so that the optical adhesive layer 200 can maintain a good connection relationship with the cover plate 300, thereby enabling the optical adhesive layer 200 to better maintain the limitation of the deformation of the cover plate 300, that is, making it difficult for the cover plate 300 to partially detach from the optical adhesive layer 200 and undergo large deformation.

[0040] Furthermore, the display module 10 may have a central region A1 and an edge region A2 surrounding the periphery of the central region A1. By setting the elastic modulus of the optical adhesive layer 200 to be not less than 10 kPa and not greater than 280 kPa, when the cover plate 300 deforms, the optical adhesive layer 200 with a lower elastic modulus can deform well together with the cover plate 300, making it difficult for the optical adhesive layer 200 at the edge region A2 to detach from the cover plate 300, that is, making it difficult for the cover plate 300 at the edge region A2 to warp, so that the display module 10 can have better display uniformity, thereby being able to better improve the display effect of the display module 10.

[0041] In some embodiments of the present application, the elastic modulus of the optical adhesive layer 200 being not less than 10 kPa and not greater than 280 kPa may refer to the elastic modulus of the optical adhesive layer 200 being not less than 10 kPa and not greater than 280 kPa in a specific temperature environment.

[0042] Optionally, at room temperature (for example, 20 °C or 25 °C), the elastic modulus of the optical adhesive layer 200 is not less than 10 kPa and not greater than 280 kPa.

[0043] Optionally, in the environment of -50 °C to 150 °C, the elastic modulus of the optical adhesive layer 200 is not less than 10 kPa and not greater than 280 kPa.

[0044] As an example, in the environment of -50 °C to 150 °C, the elastic modulus of the optical adhesive layer 200 may be 10 kPa, 15 kPa, 20 kPa, 25 kPa, 30 kPa, 35 kPa, 40 kPa, 45 kPa, 50 kPa, 55 kPa, 60 kPa, 65 kPa, 75 kPa, 80 kPa, 85 kPa, 90 kPa, 95 kPa, 100 kPa, 110 kPa, 120 kPa, 130 kPa, 140 kPa, 150 kPa, 160 kPa, 170 kPa, 180 kPa, 190 kPa, 200 kPa, 210 kPa, 220 kPa, 230 kPa, 240 kPa, 250 kPa, 260 kPa, 270 kPa or 280 kPa.

[0045] In some embodiments, the elastic modulus of the optical adhesive layer 200 may be less than that of the cover plate 300, so that the optical adhesive layer 200 can have a relatively small elastic modulus to better absorb the deformation of the cover plate 300, and also prevent the elastic modulus of the cover plate 300 from being too low, enabling the cover plate 300 to provide better protection for the display module main body 100.

[0046] Optionally, the elastic modulus of the optical adhesive layer 200 being less than that of the cover plate 300 may mean that, in the same temperature environment, the elastic modulus of the optical adhesive layer 200 is less than that of the cover plate 300.

[0047] In some embodiments of the present application, there are various ways to set the material of the optical adhesive layer 200. Optionally, the material of the optical adhesive layer 200 can be set to make the optical adhesive layer 200 have a relatively low elastic modulus and facilitate the preparation of the optical adhesive layer 200.

[0048] Exemplarily, the material of the optical adhesive layer 200 may include an optically clear adhesive (OCA), so that while the optical adhesive layer 200 can have a relatively low elastic modulus, the preparation process of the optical adhesive layer 200 can be relatively simple, and it is convenient to prepare an optical adhesive layer 200 with a more uniform thickness. As an example, compared with the coating process of an optically clear resin (OCR) in the form of a liquid glue, the coating process of the optically clear adhesive in the form of a film is more mature and simple, and the optically clear adhesive can have better thickness uniformity during coating, thereby being able to better improve the thickness uniformity of the prepared and formed optical adhesive layer 200.

[0049] In some embodiments, the optical adhesive layer 200 may include at least one of a silicone-based optically clear adhesive (Si-OCA), a polyurethane-based optically clear adhesive (PU-OCA), and an acrylic-based optically clear adhesive (Acrylic-OCA).

[0050] Exemplarily, the material of the silicone-based optically clear adhesive may include a polysiloxane composition. For example, the material of the silicone-based optically clear adhesive may include at least one of methyl vinyl polysiloxane, VMQ resin, hydrogen-containing silicone oil, silane coupling agent, and tackifying resin.

[0051] Exemplarily, the material of the polyurethane-based optically clear adhesive includes at least one of polyurethane and polyurethane.

[0052] Exemplarily, the material of the acrylic-based optically clear adhesive includes an acrylate copolymer.

[0053] By setting the optical adhesive layer 200 to include at least one of a silicone-based optically transparent adhesive, a polyurethane-based optically transparent adhesive, and an acrylic-based optically transparent adhesive, the optical adhesive layer 200 can have a lower elastic modulus, facilitating the absorption of the deformation of the cover plate 300 by the optical adhesive layer 200, and enabling the formed optical adhesive layer 200 to have better thickness uniformity. For example, the thickness difference of the formed optical adhesive layer 200 can be within 10% of the thickness of the optical adhesive layer 200, enabling the cover plate 300 located above the optical adhesive layer 200 to have better flatness and better improving the display uniformity of the display module 10.

[0054] In some embodiments, the thickness of the optical adhesive layer 200 is not less than 0.2 mm and not greater than 1 mm.

[0055] Exemplarily, the thickness of the optical adhesive layer 200 can be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm.

[0056] By reasonably setting the thickness of the optical adhesive layer 200, the thickness of the optical adhesive layer 200 is not likely to be too thick, which can better reduce the blocking effect of the optical adhesive layer 200 on the light transmission in the display module 10. Also, the thickness of the optical adhesive layer 200 is not likely to be too thin, which can facilitate the absorption of the deformation of the cover plate 300 by the optical adhesive layer 200, limit the warping of the cover plate 300, enable the display module 10 to have better display uniformity, and better improve the display effect of the display module 10.

[0057] In some embodiments, the thickness of the cover plate 300 is not less than 0.6 mm and not greater than 3 mm.

[0058] Exemplarily, the thickness of the cover plate 300 can be 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, or 3 mm.

[0059] By reasonably setting the thickness of the cover plate 300, the thickness of the cover plate 300 is not likely to be too thick, which facilitates the preparation of the cover plate 300 and can better meet the safety performance of the cover plate 300. For example, it is convenient to prepare the cover plate 300 with a relatively complex or three-dimensional appearance and can better meet the safety collision performance of the cover plate 300. Also, the thickness of the cover plate 300 is not likely to be too thin, so that when the environmental temperature changes greatly during the operation of the display module 10, the deformation degree of the cover plate 300 is not likely to be too large, which can better improve the display uniformity of the display module 10.

[0060] In some embodiments of the present application, there are various ways to set the type of the display module main body 100. For example, the display module main body 100 may include at least one of components that use liquid crystal display (LCD) devices for light-emitting display, components that use organic light-emitting diode display (OLED) devices for light-emitting display, and components that use light-emitting diode (LED) devices for light-emitting display.

[0061] For the convenience of description, the following embodiments will be described by taking the display module main body 100 as an example that may include components that use liquid crystal display (LCD) devices for light-emitting display.

[0062] Figure 3 It is a partial cross-sectional view of a display module 10 provided by another embodiment of the present application. In the figure, the Z direction can be shown as the thickness direction Z of the glass substrate 110.

[0063] As Figure 3 shown, in some embodiments, the display module main body 100 may include a backlight module 140, and the backlight module 140 can be used to provide light to assist in realizing the light-emitting display of the display module 10.

[0064] Optionally, there are various ways to set the light source in the backlight module 140. For example, the light source in the backlight module 140 may include at least one of a light-emitting diode and a cold cathode fluorescent lamp (CCFL).

[0065] Optionally, the display module body 100 may further include a glass substrate 110. Exemplarily, the glass substrate 110 may be disposed on the light-emitting side of the backlight module 140. The glass substrate 110 may be used to support at least part of the film layers of the display module body 100 on the light-emitting side of the backlight module 140. For example, the glass substrate 110 may be used to support at least part of the film layers for modulating the light provided by the backlight module 140 in the display module body 100.

[0066] In some embodiments of the present application, the thickness of the corresponding cover plate 300 may be set according to the specific structure of the cover plate 300, that is, for different cover plate 300 structures, the thickness of the cover plate 300 may be different.

[0067] As Figure 2 and Figure 3 shown, in some embodiments, when the cover plate 300 is a single-layer structure, the thickness of the cover plate 300 may be not less than 1.8 mm and not more than 3 mm.

[0068] Exemplarily, when the cover plate 300 is prepared by the in-mold labeling process, the thickness of the cover plate 300 may be not less than 2.1 mm and not more than 3 mm; when the cover plate 300 is prepared by the in-mold insert injection process, the thickness of the cover plate 300 may be not less than 1.8 mm and not more than 2 mm.

[0069] Figure 4 FIG. is a partial cross-sectional view of a display module 10 provided in another embodiment of the present application. Figure 5 FIG. is a partial cross-sectional view of a display module 10 provided in another embodiment of the present application.

[0070] As Figure 4 and Figure 5 shown, in some embodiments, the cover plate 300 includes at least two stacked sub-plates 300a, and the thickness of the cover plate 300 may be not less than 0.6 mm and not more than 2 mm.

[0071] Optionally, when the cover plate 300 includes at least two stacked sub-plates 300a, the thickness of the cover plate 300 may be not less than 0.6 mm and not more than 2 mm, which may refer to the total thickness of the cover plate 300 being not less than 0.6 mm and not more than 2 mm, that is, it may refer to the sum of the thicknesses of the stacked sub-plates 300a in the cover plate 300 being not less than 0.6 mm and not more than 2 mm.

[0072] Exemplarily, as Figure 4 shown, when the cover plate 300 includes two stacked sub-plates 300a, the total thickness of the cover plate 300 may be not less than 0.6 mm and not more than 1.2 mm; as Figure 5 shown, when the cover plate 300 includes three stacked sub-plates 300a, the total thickness of the cover plate 300 may be not less than 1 mm and not more than 2 mm.

[0073] In some embodiments, the thickness of the cover plate 300 is a, and the thickness of the glass substrate 110 is b. The thickness of the cover plate 300 and the thickness of the glass substrate 110 satisfy: 1.2 ≤ a / b ≤ 10.72.

[0074] Optionally, a can be the maximum thickness of the cover plate 300, and b can be the maximum thickness of the glass substrate 110; or, a can be the average thickness of the cover plate 300, and b can be the average thickness of the glass substrate 110.

[0075] Exemplarily, when the thickness of the cover plate 300 is not less than 0.6 mm and not greater than 3 mm, the thickness of the glass substrate 110 can be not less than 0.28 mm and not greater than 0.5 mm.

[0076] By setting the thickness of the glass substrate 110 according to the thickness of the cover plate 300, the thickness of the glass substrate 110 is not easily too thin, which can better improve the structural strength of the glass substrate 110 and facilitate the supporting and bearing effect of the glass substrate 110 on the upper film layer. Also, the thickness of the glass substrate 110 is not easily too thick, which is beneficial to reducing the internal stress of the display module 10, can better enhance the deformation tolerance of the display module 10, is beneficial to improving the black state light leakage phenomenon of the display module 10, is beneficial to reducing the degree of stress birefringence phenomenon in the display module 10, and is beneficial to improving the display uniformity of the display module 10.

[0077] Exemplarily, the phase difference Δφ in the display module 10 caused by the stress birefringence phenomenon can satisfy: Δφ = (2π * b * k * F) / (λ * S), where b is the thickness of the glass substrate 110, k is the photoelastic coefficient, F is the internal stress of the glass substrate 110 (for example, F is the internal stress in the direction perpendicular to the thickness direction Z of the glass substrate 110), λ is the wavelength of the light passing through the glass substrate 110, and S is the stress-bearing area of the internal stress of the glass substrate 110. Therefore, by setting a thinner glass substrate 110, the internal stress of the display module 10 when stressed can be better reduced, thereby being able to better reduce the values of b and F in the foregoing relationship, and further being able to better reduce the phase difference in the display module 10, being able to better reduce the light leakage degree of the display module 10, being able to better improve the black state light leakage, so that when the material of the cover plate 300 is a plastic prone to deformation, the display module 10 can still have better display uniformity.

[0078] Figure 6 It is a partial cross-sectional view of a display module 10 provided in another embodiment of the present application.

[0079] As Figure 6As shown, in some embodiments, the display module body 100 further includes a color filter layer 120 and a device structure 130 disposed on a side of the color filter layer 120 facing away from the cover plate 300. The color filter layer 120 and the device structure 130 can be used to modulate the light provided by the backlight module 140 so that the display module 10 can display a target image.

[0080] Exemplarily, the color filter layer 120 can include color filters that allow red light to pass through, color filters that allow green light to pass through, and color filters that allow blue light to pass through. The device structure 130 can include a liquid crystal layer 131, electrodes 132 disposed on at least one side of the array substrate, and a driving circuit 133 electrically connected to the electrodes 132 and used to control the electrodes 132.

[0081] In some embodiments, the glass substrate 110 includes a first glass substrate 111 disposed on a side of the color filter layer 120 facing the cover plate 300. The first glass substrate 111 disposed on the side of the color filter layer 120 facing the cover plate 300 can be used to protect the color filter layer 120 and the device structure 130.

[0082] Optionally, the thickness of the first glass substrate 111 is b1, and the thickness of the cover plate 300 and the thickness of the first glass substrate 111 can satisfy: 2.4 ≤ a / b1 ≤ 21.43.

[0083] Optionally, a can be the maximum thickness of the cover plate 300, and b1 can be the maximum thickness of the first glass substrate 111; or, a can be the average thickness of the cover plate 300, and b1 can be the average thickness of the first glass substrate 111.

[0084] Optionally, the thickness of the first glass substrate 111 is b1, and the thickness of the first glass substrate 111 satisfies: 0.14 mm ≤ b1 ≤ 0.25 mm.

[0085] By reasonably setting the thickness of the first glass substrate 111, the thickness of the first glass substrate 111 is not easily too thin, which can better improve the structural strength of the first glass substrate 111 and facilitate improving the protection effect of the first glass substrate 111 on the color filter layer 120 and the device structure 130. Also, the thickness of the first glass substrate 111 is not easily too thick, which is beneficial to reducing the internal stress when the display module 10 is stressed, can better enhance the deformation tolerance of the display module 10, is beneficial to improving the black state light leakage phenomenon of the display module 10, is beneficial to reducing the degree of stress birefringence phenomenon in the display module 10, and is beneficial to improving the display uniformity of the display module 10.

[0086] In some embodiments, the glass substrate 110 includes a second glass substrate 112 disposed on a side of the device structure 130 facing away from the cover plate 300. The second glass substrate 112 can be used to support and protect the color filter layer 120 and the device structure 130.

[0087] Optionally, the thickness of the second glass substrate 112 is b2, and the thickness of the cover plate 300 and the thickness of the second glass substrate 112 satisfy: 2.4 ≤ a / b2 ≤ 21.43.

[0088] Optionally, a can be the maximum thickness of the cover plate 300, and b2 can be the maximum thickness of the first glass substrate 111; or, a can be the average thickness of the cover plate 300, and b2 can be the average thickness of the first glass substrate 111.

[0089] Optionally, the thickness of the second glass substrate 112 is b2, and the thickness of the second glass substrate 112 satisfies: 0.14 mm ≤ b1 ≤ 0.25 mm.

[0090] By reasonably setting the thickness of the second glass substrate 112, the thickness of the second glass substrate 112 is not easily too thin, which can better improve the structural strength of the second glass substrate 112 and facilitate enhancing the support and protection of the second glass substrate 112 for the color resist layer 120 and the device structure 130. Also, the thickness of the second glass substrate 112 is not easily too thick, which is beneficial to reducing the internal stress when the display module 10 is stressed, can better enhance the deformation tolerance of the display module 10, is beneficial to improving the black state light leakage phenomenon of the display module 10, is beneficial to reducing the degree of stress birefringence phenomenon in the display module 10, and is beneficial to improving the display uniformity of the display module 10.

[0091] In some embodiments of the present application, there are various ways to set the relationship between the thickness of the first glass substrate 111 and the thickness of the second glass substrate 112.

[0092] Such as Figure 6 As shown, in some embodiments, the thickness of the first glass substrate 111 and the thickness of the second glass substrate 112 can be equal, that is, b1 = b2, which is convenient for the preparation of the display module 10 and enables the first glass substrate 111 and the second glass substrate 112 to have the same or approximate structural strength, so that both the first glass substrate 111 and the second glass substrate 112 can better protect the color resist layer 120 and the device structure 130.

[0093] Figure 7 FIG. is a partial cross-sectional view of a display module 10 provided by still another embodiment of the present application. Figure 8 FIG. is a partial cross-sectional view of a display module 10 provided by still another embodiment of the present application.

[0094] Such as Figure 7 and Figure 8As shown, in some embodiments, the thickness of the first glass substrate 111 and the thickness of the second glass substrate 112 may not be equal, that is, the thickness of the first glass substrate 111 may be greater than the thickness of the second glass substrate 112, or the thickness of the first glass substrate 111 may be less than the thickness of the second glass substrate 112, so as to facilitate adjusting the overall thickness of the glass substrate 110, such that while the glass substrate 110 may have a relatively small impact on the light in the display module 10, the glass substrate 110 can also better support and protect the film layers of the display module 10.

[0095] In some alternative embodiments, such as Figure 8 as shown, the thickness of the first glass substrate 111 and the thickness of the second glass substrate 112 satisfy: b1 < b2.

[0096] Optionally, under the condition of satisfying the total thickness of the glass substrate 110 (i.e., the sum of the thickness of the first glass substrate 111 and the thickness of the second glass substrate 112), the thickness of the first glass substrate 111 and the thickness of the second glass substrate 112 satisfy: b1 < b2.

[0097] Exemplarily, under the condition of satisfying 1.2 ≤ a / b ≤ 10.72, the thickness of the first glass substrate 111 and the thickness of the second glass substrate 112 satisfy: b1 < b2.

[0098] Or exemplarily, under the condition of satisfying that the thickness of the glass substrate 110 is not less than 0.28 mm and not greater than 0.5 mm, the thickness of the first glass substrate 111 and the thickness of the second glass substrate 112 satisfy: b1 < b2.

[0099] By setting b1 < b2, the first glass substrate 111 located above the color resist layer 120 can have a relatively small thickness, which can facilitate reducing the degree of black state light leakage and stress birefringence phenomenon at the first glass substrate 111, and since during the operation of the display module 10, the first glass substrate 111 is closer to the user than the second glass substrate 112, therefore, by thinning the thickness of the first glass substrate 111, the overall display effect of the display module 10 can be more efficiently improved.

[0100] In addition, by setting b1 < b2, the second glass substrate 112 located below the device structure 130 is not easily too thin, such that the second glass substrate 112 can have better structural strength to support and carry the device structure 130 and the color resist layer 120 above, thereby being able to better improve the structural stability of the display module 10.

[0101] Figure 9 is a partial cross-sectional view of a display module 10 provided by another embodiment of the present application.

[0102] such asFigure 9 As shown, in some embodiments, the display module body 100 may further include a polarizer 150 disposed on the light-emitting side of the backlight module 140. The polarizer 150 can be used to adjust the light provided by the backlight module 140, so that the display module 10 has a better display effect.

[0103] Exemplarily, the polarizer 150 may include a first polarizer 151 and a second polarizer 152. The first polarizer 151 may be disposed on the side of the first glass substrate 111 facing away from the backlight module 140, and the first glass substrate 111 can be used to support and carry the first polarizer 151. The second polarizer 152 may be disposed on the side of the second glass substrate 112 facing the backlight module 140.

[0104] According to some embodiments of the present application, the present application also provides a display device, and the display device includes the display module 10 in any of the foregoing embodiments.

[0105] Since the display device provided by the embodiments of the present application includes the display module 10 in any of the foregoing embodiments, the display device provided by the embodiments of the present application has the beneficial effects of the display module 10 in any of the foregoing embodiments, which will not be elaborated here.

[0106] The display device provided by the embodiments of the present application may include, but is not limited to, devices with display functions such as in-vehicle display screens, mobile phones, televisions, tablet computers, smart watches, etc.

[0107] Exemplarily, when the display device includes an in-vehicle display screen, through the settings of the material and thickness of the cover plate 300 in the foregoing embodiments, the display device provided by the embodiments of the present application can be easily prepared to form a more complex or three-dimensional appearance and have better safety collision performance, which can better meet the application requirements of in-vehicle display screens. Moreover, through the settings of the material and thickness of the optical adhesive layer 200 in the foregoing embodiments, and through the settings of the thickness of the glass substrate 110 in the foregoing embodiments, the cover plate 300 in the display device provided by the embodiments of the present application is not easily warped by heat, so that the display device can better adapt to the working environment of the vehicle, and can better reduce the light leakage degree and the occurrence degree of stress birefringence phenomenon of the display device, and the display device can have better display uniformity.

[0108] According to some embodiments of the present application, the present application also provides a vehicle, and the vehicle includes the display device in any of the foregoing embodiments.

[0109] Exemplarily, the display device may include the in-vehicle display screen in the foregoing embodiments.

[0110] Since the vehicle provided by the embodiment of the present application includes the display device in any of the foregoing embodiments, the vehicle provided by the embodiment of the present application has the beneficial effects of the display device in any of the foregoing embodiments, which will not be elaborated herein.

[0111] As described above, the foregoing is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules, and units described above can refer to the corresponding processes in the foregoing method embodiments, which will not be elaborated herein. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present application.

Claims

1. A display module, characterized in that: include: Display module body; A cover plate is arranged on one side of the display module body, and the material of the cover plate includes plastic. Wherein, an optical adhesive layer is arranged between the display module body and the cover plate, and the elastic modulus of the optical adhesive layer is not less than 10 kPa and not more than 280 kPa.

2. The display module according to claim 1, characterized in that: The optical adhesive layer includes at least one of a silicon-based optically transparent adhesive, a polyurethane-based optically transparent adhesive, and an acrylic-based optically transparent adhesive.

3. The display module according to claim 2, characterized in that: The material of the silicon-based optically transparent adhesive includes a polysiloxane composition; And / or, the material of the polyurethane-based optically transparent adhesive includes at least one of polyurethane and polyurethane; And / or, the material of the acrylic optically transparent adhesive includes an acrylate copolymer.

4. The display module according to claim 1, characterized in that: The thickness of the optical adhesive layer is not less than 0.2 mm and not more than 1 mm.

5. The display module according to claim 1, characterized in that: The thickness of the cover plate is a, the display module body includes a glass substrate, the thickness of the glass substrate is b, and the thickness of the cover plate and the thickness of the glass substrate satisfy: 1.2≤a / b≤10.

72.

6. The display module according to claim 5, characterized in that: The display module body also includes a color resist layer and a device structure arranged on the side of the color resist layer away from the cover plate, the glass substrate includes a first glass substrate arranged on the side of the color resist layer facing the cover plate, the thickness of the first glass substrate is b1, and the thickness of the cover plate and the thickness of the first glass substrate satisfy: 2.4≤a / b1≤21.

43.

7. The display module according to claim 5, characterized in that: The display module body also includes a color resist layer and a device structure arranged on the side of the color resist layer away from the cover plate, the glass substrate includes a second glass substrate arranged on the side of the device structure away from the cover plate, the thickness of the second glass substrate is b2, and the thickness of the cover plate and the thickness of the second glass substrate satisfy: 2.4≤a / b2≤21.

43.

8. The display module according to claim 1, characterized in that: The display module body also includes a glass substrate, a color resist layer, and a device structure arranged on the side of the color resist layer away from the cover plate. The glass substrate includes a first glass substrate arranged on the side of the color resist layer toward the cover plate. The thickness of the first glass substrate is b1, and the thickness of the first glass substrate satisfies: 0.14mm≤b1≤0.25mm.

9. The display module according to claim 1, characterized in that: The display module body also includes a glass substrate, a color resist layer, and a device structure arranged on the side of the color resist layer away from the substrate. The glass substrate includes a second glass substrate arranged on the side of the device structure away from the cover plate. The thickness of the second glass substrate is b2, and the thickness of the second glass substrate satisfies: 0.14mm≤b1≤0.25mm.

10. The display module according to any one of claims 1 to 9, characterized in that: The display module body also includes a glass substrate, a color resist layer, and a device structure arranged on the side of the color resist layer away from the substrate. The glass substrate includes a first glass substrate arranged on the side of the color resist layer facing the cover plate and a second glass substrate arranged on the side of the device structure away from the cover plate. The thickness of the first glass substrate and the thickness of the second glass substrate satisfy: b1≤b2.

11. The display module according to any one of claims 1 to 9, characterized in that: The thickness of the cover plate is not less than 0.6 mm and not more than 3 mm.

12. The display module according to claim 11, characterized in that: The cover plate includes at least two stacked sub-plates, and the thickness of the cover plate is not less than 0.6 mm and not more than 2 mm.

13. A display device, characterized in that: Comprising a display module as described in any one of claims 1 to 12.

14. A vehicle, characterized in that: Comprising the display device as claimed in claim 13.

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